Videos
(a)
Interpretation: Structure of
Concept introduction: In accordance with
As per IUPAC recommendations, longest chain found in a continuous manner in a branched molecule is chosen as parent chain. The longest chain must contain the alcohol functional group.The chain carbons are numbered so as to provide least numeral position towards the end in vicinity to
In
(b)
Interpretation: Structure of
Concept introduction:In accordance with IUPAC systematic nomenclature of alcohols can be derived from the parent alkane with “e” dropped and replaced by “ol” suffix.
As per IUPAC recommendations, longest chain found in a continuous manner in a branched molecule is chosen as parent chain. The longest chain must contain the alcohol functional group.The chain carbons are numbered so as to provide least numeral position towards the end in vicinity to
In alkanes, the positions of side chains or alkyl substituents are indicated by lowest numeral places before prefix.
(c)
Interpretation: Structure of
Concept introduction:In accordance with IUPAC systematic nomenclature of alcohols can be derived from the parent alkane with “e” dropped and replaced by “ol” suffix.
As per IUPAC recommendations, longest chain found in a continuous manner in a branched molecule is chosen as parent chain. The longest chain must contain the alcohol functional group.The chain carbons are numbered so as to provide least numeral position towards the end in vicinity to
In alkanes, the positions of side chains or alkyl substituents are indicated by lowest numeral places before prefix.
In order to assign absolute configuration of R and S, Cahn−Ingold−Prelog rules are used and the first step is to assign the priority order on the basis of
The Fischer projection is written along with the priorities assigned and groups are interchangedbetween adjacent places so as to obtain lowest priority group at the bottom or lowest priority.
If the groups now are arranged are read from highest towards least in clockwise fashion the R is assigned to the stereocenter, if the rotation is anticlockwise the S is assigned at the configuration.
(d)
Interpretation: Structure of
Concept introduction:In accordance with IUPAC systematic nomenclature of alcohols can be derived from the parent alkane with “e” dropped and replaced by “ol” suffix.
As per IUPAC recommendations, longest chain found in a continuous manner in a branched molecule is chosen as parent chain. The longest chain must contain the alcohol functional group.The chain carbons are numbered so as to provide least numeral position towards the end in vicinity to
In alkanes, the positions of side chains or alkyl substituents are indicated by lowest numeral places before prefix.
(e)
Interpretation: Structure of
Concept introduction:In accordance with IUPAC systematic nomenclature of alcohols can be derived from the parent alkane with “e” dropped and replaced by “ol” suffix.
As per IUPAC recommendations, longest chain found in a continuous manner in a branched molecule is chosen as parent chain. The longest chain must contain the alcohol functional group.The chain carbons are numbered so as to provide least numeral position towards the end in vicinity to
In alkanes, the positions of side chains or alkyl substituents are indicated by lowest numeral places before prefix.
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Chapter 8 Solutions
Organic Chemistry: Structure and Function
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- In the reaction of ethylene with H20O in the presence of sulfuric acid,which one adds across the double bond first? *arrow_forwardHow does the addition of NaNH2 to an alkane lead to the synthesis of a terminal alkyne? Doesn't the starting material have to be an alkene?arrow_forwardWhich of the following statement/s is/are false about the reaction of 3-methylhex-3-ene with H3O+?arrow_forward
- 1,4-Pentadiene (CH2=CH-CH2-CH=CH2) is a liquid at room temperature and has a density of 0.66 g/mL and molar mass of 68.12 g/mol. In a laboratory experiment, 3.80 mL of this compound was treated with 4.80 mL of conc. H2SO4 (100% w/w; molar mass 98.08 g/mol). Note that the density of conc. H2SO4 is 1.84 g/mL. The resulting sulfate ester was then treated with 1.20 mL of water (molar mass 18.02 g/mol) affording, after work- up, 2,4-pentanediol (molar mass 104.15 g/mol) as the crude product. The crude product was then purified by simple distillation, which yielded 2.00 g of pure product. What is the theoretical yield of 2,4-pentanediol expressed in grams? Show calculations. What is the percentage yield of pure 2,4-pentanediol?arrow_forward1,4-Pentadiene (CH2=CH-CH2-CH=CH2) is a liquid at room temperature and has a density of 0.66 g/mL and molar mass of 68.12 g/mol. In a laboratory experiment, 3.80 mL of this compound was treated with 4.80 mL of conc. H2SO4 (100% w/w; molar mass 98.08 g/mol). Note that the density of conc. H2SO4 is 1.84 g/mL. The resulting sulfate ester was then treated with 1.20 mL of water (molar mass 18.02 g/mol) affording, after work- up, 2,4-pentanediol (molar mass 104.15 g/mol) as the crude product. The crude product was then purified by simple distillation, which yielded 2.00 g of pure product. a. Provide a balanced chemical equation to show the reaction between 1,4-pentadiene and sulfuric acid. Do not use molecular formulas in the chemical equation except for sulfuric acid. b. What reactant is the limiting reagent in this chemical equation? Show calculations to support your answer.arrow_forwardA compound X of molecular formula C7H14 when hydrogenated produces 2,4-dimethylpentane and when hydroborated the obtained alcohol is 2,4-dimethyl-1-pentanol. a. What is the structure of X? b. If X is reacted with H2O catalyzed by H2SO4, what product is obtained? Write the structure, give the name, and write the complete mechanism, step by step of this reaction, in such a way as to explain the formation of the compound (DO NOT FORGET THE CORRECT USE OF ARROWS!).arrow_forward
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